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Picturing Polygons Review. Definitions:. What is a polygon? A. A shape with lines B. A closed figure made up of at least 3 straight sides C. A quadrilateral or triangle D. A closed shape. Definitions:. What is a polygon? A. A shape with lines
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Definitions: • What is a polygon? • A. A shape with lines • B. A closed figure made up of at least 3 straight sides • C. A quadrilateral or triangle • D. A closed shape
Definitions: • What is a polygon? • A. A shape with lines • B. A closed figure made up of at least 3 straight sides • C. A quadrilateral or triangle • D. A closed shape
Definitions: • What is a scalene triangle? • A. A triangle with 2 equal sides • B. A triangle with 3 equal sides • C. A triangle with no equal sides • D. A triangle with 2 equal angles
Definitions: • What is a scalene triangle? • A. A triangle with 2 equal sides • B. A triangle with 3 equal sides • C. A triangle with no equal sides • D. A triangle with 2 equal angles
Definitions: • True or false: A parallelogram is a type of rhombus.
Definitions: • True or false: A parallelogram is a type of rhombus
Definitions: • What is a trapezoid? • A. A triangle with one pair of parallel lines • B. A quadrilateral with one pair of parallel sides • C. A quadrilateral with one pair of perpendicular lines • D. A triangle with one pair of congruent sides
Definitions: • What is a trapezoid? • A. A triangle with one pair of parallel lines • B. A quadrilateral with one pair of parallel sides • C. A quadrilateral with one pair of perpendicular lines • D. A triangle with one pair of congruent sides
Definitions: • How many degrees are in each angle of an equilateral triangle? • A. 45° • B. 90° • C. 180° • D. 60°
Definitions: • How many degrees are in each angle of an equilateral triangle? • A. 45° • B. 90° • C. 180° • D. 60°
Definitions: • How many total degrees are in EVERY quadrilateral? • A. 360° • B. 300° • C. 180° • D. 270°
Definitions: • How many total degrees are in EVERY quadrilateral? • A. 360° • B. 300° • C. 180° • D. 270°
Time to think…. • A park is shaped like a pentagon. Each side is 41 meters long. What is the perimeter of the park?
Time to think… • A park is shaped like a pentagon. Each side is 41 meters long. What is the perimeter of the park? • 205 meters
Time to think… • How many lines of symmetry does this polygon have?
Time to think… • How many lines of symmetry does this polygon have?
Time to think… • fd 50 • rt 120 • fd 50 • rt 120 • fd 50 • rt 120 • What type of polygon do these commands form?
Time to think… • fd 50 • rt 120 • fd 50 • rt 120 • fd 50 • rt 120 • What type of polygon do these commands form? Equilateral Triangle, Acute Triangle, Isosceles Triangle
Time to think… Are these triangles congruent or similar and why?
Time to think… • Are these triangles congruent or similar and why? Similar because their angles are the same and their sides are in proportion
Time to think… • What type of angle is this?
Time to think… • What type of angle is this? Obtuse… more than 90°
Time to think… 75º Find the missing angle: ?
Time to think… • The missing angle is 105º
Time to think… • If a triangle has a 40º angle and a 70º angle, what is the third angle?
Time to think… • If a triangle has a 40º angle and a 70º angle, what is the third angle? • The missing angle is 70º.
Explain… • Why is a square a rectangle, but a rectangle not a square?
Explain… • Why is a square a rectangle, but a rectangle not a square? • A square is a rectangle because it has two pairs of congruent sides, two pairs of parallel sides, and four right angles. A rectangle is not a square because it does not have all 4 sides congruent.
Time to think… • Solve this riddle: • I have two pairs of parallel sides. • I have no right angles • All of my sides are congruent to each other. • What am I?
Time to think… • Solve this riddle: • I have two pairs of parallel sides. • I have no right angles • All of my sides are congruent to each other. • What am I? Rhombus